Avengers comic books were Marvel comic books' first super-hero group. Many of the early issues were reprinted in "Marvel Triple Action".

Known for their rallying cry "Avengers Assemble!" and the nickname of "Earth's Mightiest Heroes", the team originally featured Ant-Man, Wasp, Thor, Iron Man, and the Hulk, all of whom were established superheroes. A rotating roster has been their hallmark, and the Scarlet Witch, Quicksilver, Hawkeye, Vision, Black Widow, and the team's leader, Captain America have had long histories with the Avengers.

In Marvel's 'Ultimate' line of comics, the team was known as the "Ultimates".